CN207743302U - A kind of poly-lithium battery protection board - Google Patents
A kind of poly-lithium battery protection board Download PDFInfo
- Publication number
- CN207743302U CN207743302U CN201721238172.8U CN201721238172U CN207743302U CN 207743302 U CN207743302 U CN 207743302U CN 201721238172 U CN201721238172 U CN 201721238172U CN 207743302 U CN207743302 U CN 207743302U
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- Prior art keywords
- protection
- resistance
- lithium battery
- control chip
- fpc
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of poly-lithium battery protection board, the poly-lithium battery protection board is made of steel disc, FPC, plug-in unit, PCB, nickel strap and protection circuit.The protection board FPC pad trepannings are designed using " U-shaped " slot so that in the welding process, the print tin on pcb board can fully merge PCB and FPC with tin cream on FPC, ensure soldering reliability；The protection board PCB is in the fluted design of FPC bending parts, requirement when meeting FPC bendings in size；The protection circuit uses duplicate protection scheme, overcurrent protection to be sampled using precision resistance, can effectively improve the precision of overcurrent protection.A kind of poly-lithium battery protection board disclosed by the utility model; it not only increases reliability of the battery in structure, and protection circuit can also effectively protect battery, significantly lower the failure rate of battery protecting plate; to improve the safety of lithium battery, it is of great practical significance.
Description
Technical field
The utility model is related to protection board technical fields, more particularly to a kind of poly-lithium battery protection board.
Background technology
Currently, polymer Li-ion battery, since with higher safety, higher quality energy density is more next
More favored by industry and client.During battery hand assembled, it is usually associated with the phenomenon that tearing, draw, pulling, especially
For the FPC with bending, lead to the reduction of protection board security reliability.In addition to this, conventional PTC+fuse+IC+MOS protects shape
Formula, the requirement that cannot meet limit power power-supply in safety can using duplicate protection in order to promote the safeguard protection performance of protection board
To be effectively protected the safety of battery.
Invention content
In view of this, the purpose of this utility model is to provide a kind of poly-lithium battery protection board, battery is not only increased
Reliability in structure, protection circuit can also effectively protect battery, to improve the safety of lithium battery, tool
There is extensive market application prospect, is of great practical significance.
To realize the purpose of this utility model, the utility model provides a kind of poly-lithium battery protection board, including protects
Backplate main body 10, the protection plate body 10 include the PCB30 and FPC20 of transverse weld together.
Wherein, the fronts PCB30 are provided with the first solder pad 31, and reverse side is provided with the second solder pad 32 and
The front of three solder pads 33, the FPC20 is respectively provided with steel disc 21 and the 4th solder pad 34, and the back side of the FPC20 exists
There are one interfaces 22 for position tool corresponding with the steel disc 21；The first solder pad 31 of the PCB30 and described
The 4th solder pad 34 of FPC20 welds together；Positive second solder pad 32 of the PCB30 and third solder pad
33 connect with the second nickel sheet 12 and the first nickel sheet 11 respectively, first nickel sheet, 11 and second nickel sheet 12 respectively with the lithium battery
The cathode and anode of battery core connect；The interface 22 connects with external cell charging equipment.
Wherein, the 4th solder pad trepanning of the FPC is designed using " U-shaped " slot.
Wherein, the PCB is in the fluted design of FPC bending parts, requirement when meeting FPC bendings in size.
Wherein, the protection board further includes protection circuit, and the protection circuit uses duplicate protection scheme.
Wherein, first again protection circuit include the first protection control chip U1 again, the described first protection control chip U1 again
External power supply negative terminal VM connect with resistance R2, the over-current detection terminal VINI of the described first protection control chip U1 again
Connect with resistance R SC1, capacitance C3；Described first protects the power supply terminal VDD difference connecting resistance R1 and electricity of control chip U1 again
Hold C1, the R1 meets the positive terminal P+, capacitance C2, resistance R3 of external cell charging equipment respectively；Described first protection control again
The ground terminal VSS of chip U1 meets capacitance C1, resistance RSC1, appearance C3 and connects respectively, and described first protects control chip U1's again
Discharging terminals DO connects with the grid G 1 of switch transistor T 1 in field-effect tube MOS Q1, Q2, and described first protects control chip U1 again
Charging terminal CO connect with the grid G 2 of switch transistor T 2 in MOS Q1, Q2；The drain electrode of switch transistor T 1 in MOS Q1, Q2
The drain D 2 of switch transistor T 2 connects in D1 and MOS Q1, Q2, the source S 1 of switch transistor T 1 and the electricity in MOS Q1, Q2
The source S 2 of switch transistor T 4 connects in resistance R4, MOS Q3, Q4, and the source S 2 of switch transistor T 2 is distinguished in MOS Q1, Q2
With resistance R2, capacitance C2, negative tempperature coefficient thermistor NTC, the negative pole end P- for identifying resistance ID and external cell charging equipment
Connect.
Wherein, second again protection circuit include that the second protection controls chip U2, the second protection control chip U2's is outer
Portion power cathode terminal VM connects with resistance R4, the over-current detection terminal VINI and resistance R of the second protection control chip U2
SC2, capacitance C5, resistance R SC1, capacitance C3 connect；The power supply terminal VDD of the second protection control chip U2 distinguishes connecting resistance
R3 and capacitance C4, resistance R3 meet the battery core anode B+ and resistance R1 of lithium battery respectively；The second protection control chip U2's connects
Ground terminal VSS meets capacitance C4, lithium battery electric core cathode B-, resistance RSC2, capacitance C5 respectively；The second protection control chip
The discharging terminals DO of U2 connects with the grid G 1 of switch transistor T 3 in field-effect tube MOS Q3, Q4, the second protection control chip
The charging terminal CO of U2 connects with the grid G 2 of switch transistor T 4 in MOS Q3, Q4, the source of switch transistor T 4 in MOS Q3, Q4
Pole S2 connects with the source S 1 of switch transistor T 1 in R4, MOS Q1, Q2 respectively, the source of switch transistor T 1 in MOS Q3, Q4
Pole S1 connects with resistance RSC1, capacitance C3.
Compared with prior art, the beneficial effects of the utility model are that the utility model provides a kind of polymer lithium electricity
Pond protection board can form effective safeguard protection to overcharging for battery, significantly lower the failure rate of battery protecting plate, can be with
The generation for substantially reducing battery explosion accident has extensive market application prospect, has to improve the safety of lithium battery
Great production practices meaning.
Description of the drawings
Fig. 1 is a kind of protection board structure chart that poly-lithium battery protection board has provided by the utility model；
Fig. 2 is a kind of connection signal for the protection board circuit that poly-lithium battery protection board has provided by the utility model
Figure；
Fig. 3 is a kind of front view of poly-lithium battery protection board provided by the utility model；
Fig. 4 is a kind of rearview of poly-lithium battery protection board provided by the utility model；
Fig. 5 is a kind of poly-lithium battery protection board vertical view provided by the utility model；
Fig. 6 is the front view of included PCB in a kind of poly-lithium battery protection board provided by the utility model
Fig. 7 is the vertical view of included PCB in a kind of poly-lithium battery protection board provided by the utility model；
Fig. 8 is the front view of included FPC in a kind of poly-lithium battery protection board provided by the utility model；
Fig. 9 is the rearview of included FPC in a kind of poly-lithium battery protection board provided by the utility model；
Figure 10 is the vertical view of the FPC included by a kind of poly-lithium battery protection board provided by the utility model；
In figure, 10 be protection plate body, and 11 be the first nickel sheet, and 12 be the second nickel sheet, and 20 be FPC, and 30 be PCB, and 21 be steel
Piece, 22 be interface, and 31 be the first solder pad, and 32 be the second solder pad, and 33 be third solder pad, and 34 be the 4th weldering
Pad is connect, 35 be common weld part, 5- grooves.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
It should be noted that " connection " described herein and the word for expressing " connection ", as " being connected ",
" connected " etc. was both directly connected to another component including a certain component, and also passed through other component and another portion including a certain component
Part is connected.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Referring to Fig. 1, Fig. 3 to Fig. 5, for a kind of poly-lithium battery protection board provided by the utility model, including protection
Plate body (10), the protection plate body (10) includes the FPC (20) welded together and PCB (30)；
Together referring to Fig. 6 to Figure 10, PCB (30) front is provided with the first solder pad (31), the second welding of reverse side setting
The front of pad (32) and third solder pad (33), FPC (20) is respectively provided with steel disc (21) and the 4th solder pad (34),
In position corresponding with the steel disc (21) tool, there are one interfaces (22) at the back side of FPC (20).The first welding of PCB (30)
The 4th solder pad (34) of pad (31) and the FPC (20) weld together.Positive second solder pads of PCB (30)
(32) connect respectively with the second nickel sheet (12) and the first nickel sheet (11) with third solder pad (33), first nickel sheet (11) and
Second nickel sheet (12) connects with the cathode of the lithium battery electric core and anode respectively.
In specific implementation, the first solder pad (31) of the PCB (30) and the 4th solder pad (34) weldering of FPC (20)
It is connected together, specific common weld part (35) is as shown in figure 3, to which the PCB (30) and the FPC (20) is welded on one
Play the composition protection plate body (10).
In specific implementation, together referring to Fig. 3, positive second solder pad (32) of the PCB (30) and third welding weldering
Disk (33) connects with the second nickel sheet (12) and the first nickel sheet (11) respectively, and first nickel sheet (11) and the second nickel sheet (12) are respectively
Connecting with the cathode of the lithium battery electric core and anode, the interface (22) connects with external cell charging equipment, therefore, institute
It states battery protecting plate to be located between the battery core and external cell charging equipment of the lithium ion, to pass through the battery protecting plate
The dual-protection circuit of formation is protected, under conditions of ensureing safety, facilitate external cell charging equipment by next pair
Lithium battery charges.The protection board FPC pad trepannings are designed using " U-shaped " slot so that PCB and FPC is in welding process
In, the print tin on pcb board can fully be merged with tin cream on FPC, ensure soldering reliability；
The protection board further includes protection circuit, and the protection circuit uses duplicate protection scheme, and overcurrent protection is using essence
Cipher telegram resistance is sampled, and can effectively improve the precision of overcurrent protection, and the protection circuit, can be with using duplicate protection scheme
The effective requirement for meeting limit power power-supply.A kind of poly-lithium battery protection board is provided for the utility model, it is described double
Protection has protection board circuit again, and referring to Fig. 2, the protection board circuit protects circuit 100 and second to protect again again including first
Circuit 200；
In the present invention, described first circuit 100 is protected to be used to carry out overcharge, mistake to the lithium battery electric core again
Electric discharge, overcurrent and short-circuit protection；
Described second protects circuit 200 again, is connected with the primary protection circuit, for protecting circuit to protect again first
When protective function fails, overcharge, overdischarge, overcurrent and short-circuit protection are carried out to the battery core of the lithium battery, especially by the
Switch transistor T 3 and the break-make of T4 are protected in two protection chip U2 control field-effect tube MOS Q3, Q4.
Referring to Fig. 2, in specific implementation, described first again protection circuit 100 include the first protection control chip U1 again, institute
State first protects the current sense terminal VINI of control chip U1 to connect with using resistance R SC1, capacitance C3 again；
It should be noted that described second protects circuit 200, in the first protection circuit protection function failure again again
When, the lithium battery is overcharged, is put excessively, overcurrent, short-circuit protection, protects control chip U2 to control again especially by second
Switch transistor T 3 and the break-make of T4 carry out overcharging protection in MOS Q3, Q4.
It should be noted that in normal operation, first protects in circuit 100 first protection control chip U1 again again
Charging terminal CO, discharging terminals DO export high level, current sense terminal VINI voltages are low level, at this time MOS Q1, Q2
Interior two N-channel field-effect tube T1, T2 are in conducting state.When battery is charged normal by charger, with the increasing of time
Add, the voltage at battery battery core both ends gradually rises, when the voltage of battery battery core is increased to after overcharging electro-detection voltage of U1, and this
Kind of state is maintained at when it is more than delay time to overcharge electro-detection, and the charging terminal CO of the first protection control chip U1 again is by high level
Become low level, the cut-off of T2 pipes, charge circuit is cut off, and circuit, which enters, overcharges guard mode.When battery by external load into
Row electric discharge when, battery core both end voltage slowly reduces, when first again protection control chip U1 detect that the voltage of battery core dropped to
Put detection voltage after, and this state be maintained at overdischarge detection it is more than delay time when, the discharging terminals DO of U1 is by high level
Become low level, the cut-off of T1 pipes, the i.e. discharge loop of battery core are cut off and stop electric discharge.When charging, discharge current are in specified value
Or when more than rated value, the voltage drop of the current sense terminal VINI of U1 can be caused as low as charge over-current detection voltage, electric discharge
If overcurrent detects voltage hereinafter, this state is continuously maintained in charging, discharge over-current detection situation more than delay time
Under, control charging, T2, T1 pipe to discharge, which are closed, stops charge and discharge, and circuit carries out overcurrent protection.Battery is to load discharge process
In, voltage value or more is detected when the current sense terminal VINI of U1 is in load short circuits, and this state is continuously maintained in load
More than delay time, first protects the discharging terminals DO of control chip U1 to become low level, T1 pipes from high level to short-circuit detecting again
Shutdown, to cut off discharge loop, plays the role of short-circuit protection.
When first protects 100 shielding failure of circuit again, battery connection charger charges normal, as time increases,
The voltage at battery battery core both ends will gradually rise, when second again protection control chip U2 detect that cell voltage reaches and overcharge electric-examination
After surveying voltage, and this state is maintained at when it is more than delay time to overcharge electro-detection, and the charging terminal CO of U2 is become from high level
Low level, T3, T4 pipe cut-off, carries out overcharging protection to cut off charge circuit.When battery is discharged by external load,
Battery core both end voltage slowly reduces, when second again protection control chip U2 detect that the voltage of battery core dropped to and put detection voltage
Afterwards, when and it is more than delay time to be maintained at overdischarge detection for this state, the discharging terminals DO of U2 becomes low level from high level,
T3 pipes end, i.e., the discharge loop of battery core is cut off and stops electric discharge.When charging, discharge current specified value or rated value with
When upper, the voltage drop of the current sense terminal VINI of U2 can be caused to be detected as low as charge over-current detection voltage, discharge over-current
In the case that voltage is hereinafter, if this state is continuously maintained in charging, discharge over-current detects more than delay time, control is filled
Electricity, T4, T3 pipe to discharge, which are closed, stops charge and discharge, and circuit carries out overcurrent protection.Battery is during to load discharge, when U2's
Current sense terminal VINI is in load short circuits detection voltage value or more, and this state is continuously maintained in load short circuits detection and prolongs
Late more than the time, second protects the discharging terminals DO of control chip U2 to become low level, T3 pipes shutdown, to cut from high level again
Disconnected discharge loop, plays the role of short-circuit protection.
In the present invention, in specific implementation, the source S 2 of switch transistor T 2 can also be distinguished in MOS Q1, Q2
It is connected with negative tempperature coefficient thermistor NTC and external user identity ID identification circuits.
It should be noted that for the utility model, first protects control chip U1 and second to protect control chip again again
The parameter of U2 need to meet the limitation voltage request of the charging to lithium battery electric core；Switch transistor T 1, T2 in MOS Q1, Q2 and
The field effect transistor M OSFET of the N-channels such as switch transistor T 3, T4 in MOS Q3, Q4, their parameter need to meet lithium battery
The requirement of core discharge capability, and protect control chip U1 and second that control chip U2 is protected to match again again with first.In addition,
User demand is can be combined with, the negative tempperature coefficient thermistor NTC, the external user identity ID that need further to connect are identified
Circuit etc. carries out type selecting.In specific implementation, first protects the protection voltage that overcharges of circuit 100 to protect circuit again less than second again
200 overcharge protection voltage, and the Cross prevention voltage of the first protection circuit 100 again is higher than second, put again by the mistake of protection circuit 200
Voltage is protected, first protects the Cross prevention voltage of circuit 100 to be higher than the second Cross prevention voltage for protecting circuit 200 again again,
First protects the charging overcurrent protection electric current of circuit 100 to protect the charging overcurrent protection electric current of circuit 200 identical again with second again,
First protects the electric discharge overcurrent protection current range of circuit 100 to be less than the second electric discharge overcurrent protection electricity for protecting circuit 200 again again
Flow range.
In specific production practices, for the utility model, it should be noted that following item：
1, the component of battery protecting plate is evenly distributed, and comes the component Relatively centralized arrangement of same circuit unit, with
Convenient for debugging and repairing；
2, the component of interconnecting line answers relatively close arrangement, in favor of improving wiring density and ensureing cable run distance most
It is short；
3, to thermo-responsive component, when arrangement, should be far from the big component of calorific value (such as NTC should be far from MOSFET).
When 4, being connected up for ID, NTC, cabling should be located at the centre of FPC, reduce several to FPC tearings in assembling process
Rate.
5, for convenient test, necessary test point (such as NTC, identification can be set in the design of battery protecting plate
The test point of ID circuits, second protection).
6, when device layout, the second solder pad of PCB and third solder pad is separately laid out with device side, effectively carried
High conveyance capacity.
It should be noted that for the utility model, in PCB in the design that FPC is combined, in order to meet super-high-current
Demand, anode, cathode increase by one pad, and FPC is using copper is rolled, to meet needs of the user to bending.
In specific implementation, the user of the utility model can also carry out the test after assembling Pack：After assembling Pack
Lithium battery carries out electric performance test.On electric-examination cabinet by open-circuit voltage, charge normal test, regular picture test, protection
Battery after assembling Pack is carried out electric performance test by the setting of characteristic electric-examination program, and test result should meet the requirement of design.
In conclusion compared with prior art, the utility model provides a kind of poly-lithium battery protection board, can
To form effective safeguard protection to overcharging for battery, significantly lowers the failure rate of battery protecting plate, battery can be substantially reduced
The generation of explosion accident has extensive market application prospect to improve the safety of lithium battery, has great production real
Trample meaning.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (7)
1. a kind of poly-lithium battery protection board, which is characterized in that including protection plate body (10), the protection plate body (10)
Including transverse weld PCB (30) together and FPC (20).
2. poly-lithium battery protection board according to claim 1, which is characterized in that PCB (30) front is provided with
First solder pad (31), reverse side are provided with the second solder pad (32) and third solder pad (33), and the FPC (20) is just
Face is respectively provided with steel disc (21) and the 4th solder pad (34), and the back side of the FPC (20) is corresponding with the steel disc (21)
Position tool there are one interface (22)；The first solder pad (31) of the PCB (30) and the 4th welding of the FPC (20)
Pad (34) welds together；Positive second solder pad (32) of the PCB (30) and third solder pad (33) respectively with
Second nickel sheet (12) and the first nickel sheet (11) connect, first nickel sheet (11) and the second nickel sheet (12) respectively with the lithium battery
The cathode and anode of battery core connect；The interface (22) connects with external cell charging equipment.
3. poly-lithium battery protection board according to claim 2, which is characterized in that the 4th solder pad of the FPC
Trepanning is designed using " U-shaped " slot.
4. poly-lithium battery protection board according to claim 3, which is characterized in that the PCB has recessed in FPC bending parts
Slot designs, requirement when meeting FPC bendings in size.
5. poly-lithium battery protection board according to claim 1, which is characterized in that the protection board further includes protection electricity
Road, the protection circuit use duplicate protection scheme.
6. poly-lithium battery protection board according to claim 5, which is characterized in that first protects circuit to include first again
Protection control chip U1 again, described first protects the external power supply negative terminal VM of control chip U1 to connect with resistance R2 again, institute
State first protects the over-current detection terminal VINI of control chip U1 to connect with resistance R SC1, capacitance C3 again；Described first protects again
The power supply terminal VDD difference connecting resistance R1 and capacitance C1, the R1 of control chip U1 is connecing external cell charging equipment just respectively
Extreme P+, capacitance C2, resistance R3；Described first protects the ground terminal VSS of control chip U1 to connect capacitance C1, resistance respectively again
RSC1, capacitance C3, resistance RSC2, capacitance C5, described first protects the discharging terminals DO and field-effect tube MOS of control chip U1 again
The grid G 1 of switch transistor T 1 connects in Q1, Q2, and described first protects again in the charging terminal CO and MOS Q1, Q2 of control chip U1
The grid G 2 of switch transistor T 2 connects；In MOS Q1, Q2 in the drain D 1 of switch transistor T 1 and MOS Q1, Q2 switch transistor T 2 leakage
Pole D2 connects, the source S 1 of switch transistor T 1 and switch transistor T 4 in the resistance R4, MOS Q3, Q4 in MOS Q1, Q2
Source S 2 connect, in MOS Q1, Q2 the source S 2 of switch transistor T 2 respectively with resistance R2, capacitance C2, negative temperature coefficient heat
The negative pole end P- of quick resistance NTC, identification resistance ID and external cell charging equipment connect.
7. poly-lithium battery protection board according to claim 6, which is characterized in that second protects circuit to include second again
Protection control chip U2, the external power supply negative terminal VM of the second protection control chip U2 connect with resistance R4, and described the
Over-current detection terminal VINI and resistance R SC2, capacitance C5, resistance R SC1, the capacitance C3 of two protection control chip U2 connects；Institute
Power supply terminal VDD difference the connecting resistance R3 and capacitance C4, resistance R3 for stating the second protection control chip U2 connect the electricity of lithium battery respectively
Core anode B+ and resistance R1；It is negative that the ground terminal VSS of the second protection control chip U2 connects capacitance C4, lithium battery electric core respectively
Pole B-, resistance RSC2, capacitance C5；In the discharging terminals DO and field-effect tube MOS Q3, Q4 of the second protection control chip U2
The grid G 1 of switch transistor T 3 connects, the charging terminal CO of the second protection control chip U2 and switch transistor T 4 in MOS Q3, Q4
Grid G 2 connect, in MOS Q3, Q4 the source S 2 of switch transistor T 4 respectively with switch transistor T 1 in R4, MOS Q1, Q2
Source S 1 connect, the source S 1 of switch transistor T 1 connects with resistance RSC1, capacitance C3 in MOS Q3, Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238172.8U CN207743302U (en) | 2017-09-26 | 2017-09-26 | A kind of poly-lithium battery protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238172.8U CN207743302U (en) | 2017-09-26 | 2017-09-26 | A kind of poly-lithium battery protection board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207743302U true CN207743302U (en) | 2018-08-17 |
Family
ID=63114093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721238172.8U Active CN207743302U (en) | 2017-09-26 | 2017-09-26 | A kind of poly-lithium battery protection board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207743302U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103970A (en) * | 2018-10-31 | 2018-12-28 | 惠州市富能电子有限公司 | A kind of dual-protection circuit based on aeromodelling airplane lithium battery |
| CN109728215A (en) * | 2018-11-23 | 2019-05-07 | 深圳欣旺达智能科技有限公司 | Battery core and battery protection board encapsulation construction |
-
2017
- 2017-09-26 CN CN201721238172.8U patent/CN207743302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103970A (en) * | 2018-10-31 | 2018-12-28 | 惠州市富能电子有限公司 | A kind of dual-protection circuit based on aeromodelling airplane lithium battery |
| CN109728215A (en) * | 2018-11-23 | 2019-05-07 | 深圳欣旺达智能科技有限公司 | Battery core and battery protection board encapsulation construction |
| CN109728215B (en) * | 2018-11-23 | 2021-09-21 | 深圳欣旺达智能科技有限公司 | Battery core and battery protection board packaging structure |
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